Disc Brake System Hose; Brake Fluid; Filling Out Brake Fluid; Air Bleed Operation - Sym JET 4 R 50 Series Service Manual

Disc Brake System Hose: (Front Disc
Brake Type)
Make sure that the brake hose is corrosion or
damage,and also check the system for leaking.

Brake Fluid:

Check brake fluid level in the brake fluid reservoir.
If the level is lower than the LOWER limit, add
brake fluid DOT-3 to UPPER limit. Also check
brake system for leaking if low brake level found.
Caution
・
In order to maintain brake fluid in the
reservoir in horizontal positon, do not
remove the cap until handle bar stop.
・
Do not operate the brake lever after the cap
had been removed. Otherwise, the brake
fluid will spread out if operated the lever.
・
Do not mix non-compatible brake fluid
together.

Filling Out Brake Fluid

Tighten the drain valve, and add brake fluid.Place
the diaphragm in.
Operate the brake lever so that brake fluid
contents inside the brake system hoses.

Air Bleed Operation

Connect a transparent hose to draining valve.
Hold the brake lever and open air bleeding valve.
Perform this operation alternative until there is no
air inside the brake system hoses.
Caution
Before closing the air bleeding valve,do not
release the brake lever.
Added Brake Fluid
Add brake fluid to UPPER limit lever.
Recommended brake fluid:DOT3 or DOT 4 WELL
RUN brake fluid.
Caution
Never mix or use dirty brake fluid to prevent
from damaging brake system or reducing brake
performance
2. Service Maintenance Information
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